Rendering Modes

App Router uses RSC by default, and SSR/SSG/ISR are controlled by cache and data rules.

RSC

• Default: server renders UI without hydration.
• Best for stable content and heavy server logic.
• Supports streaming via Suspense.

SSR

• Renders on every request, no cache.
• Use for personalization or frequently changing data.
• Triggered by dynamic params, cache: "no-store", or dynamic = "force-dynamic".

SSG

• Build-time render; cached HTML + RSC payload.
• Best for marketing, docs, blogs.

ISR

• Background revalidation after revalidate window.
• Configure with export const revalidate = N.

Quick guide

• RSC default, SSR for user-specific data, SSG for static pages, ISR for semi-dynamic.